Sewing-machine



F. ZALESKI AND A. R. SCHOENKY.

SEWING MACHINE.

APPLICATION FILED SKEPT. 24, 1918.

Patented Dec. 14, 1920.

i3 SHEETS-SHEET l..

F. ZALESKI AND A. R. SCHOENKY.

SEWING MACHINE.

APPLICATION FILED SEPT. 24, I9I8.

Patented Dec. 14, 1920.

i3 SHEETS-SHEET 2.

F. ZALESKI AND A- R. SCHOENKY.

SEWING MACHINE.

APPLICATION FILED SEPI-24, ISIS- 1,361,952. Patented Dec. 14, 1920.

QQ 13 sHEErs-sHm 3.

fnv@ rf f'afn? Zales/3%' 6 F. ZALESKI AND A. R. SCHOENKY.

SEWING MACHINE.

APPLICATION FILED SEPT.24.1918.

M361 ,952, Patented Dec. 14, 1920.

J5\ J2 1.3 SHEETS-SHEET 4- [nl #ZA I INVENTORS Fran/f Zalez (Q zzgut 3.1807106217@ ATTORNEYS.

F. zALIssKI/INI) A. II. SCHOENKY.

SEWING MACHINE.

APPLICATION FILED sEPT.24. IsIs.

fallen/7671s y /fZaZeshz J RWM KM & IM,

Patented Dec. 14, 1920 13 SHEETS-SHEET 5.

F. ZALESKI AND A. R. SCHOENKY.

SEWING MACHINE. APPLICATION HLD SEPT. 24. 1918.

Patented Dec. 14, 1920.

13 SHEETS-SHEET 6.

F. ZALESKI AND A, R. SCHENKY.

sawme MAcmNE.

APPLICATION FILED SEPT-24,1918. 15,351,952. Patented Dec. 14, 1920.

13 SHEETS-SHEET 7.

F. ZALESKI AND A, R. -SCHOENKY.

sEwxNs MACHINE.

APPLICATION FILED SEPT 24, 1918. 1,3@1952 atented Dec. 14, 1920.

I3 SHEETS-SHEET 8.

F. ZALESKI AND A. R. SCHOENKY.

SEWING MACHINE.

APPLICATION HLED sEPT.24, 1918.

Patented Deo. 14, 1920.

i3 SHEETS-SHEET 9.

.51 van:

F. ZALESKI AND A. R. SCHOENKY.

SEWING MACHINE. APPLICATION FIL'ED sEPT.24.1918.

1,361,952, Patented Dec. 14, 1920.

I3 SHEETS-SHEET IO.

QogJl/w KM@ @bri F. ZALESK! AND A. R. SCHOENKY.

SEWING MACHINE.

APPUcATioN FlLED sEPT.24.1918.

1,861,952, Patented Dec. 14, 1920;

13 SHEETS-SHEET l1.

nverzrdj Fran Zalesi F. ZALESKI AND A. R. SCHOENKY.

SEWING MACHINE. APPLICATION FILED SEPT-24,1918.

1,361,952. Patented De@.14,1920.

13 SHEETS-SHEET I2- @wwe/209% F. ZALESKI AND A. R. SCHOENKY. SEWING MACHINE.

) APPLICATION FILED SEPT. 24, |918.

Patented Dec. 14, 1920.

I3 SHEETSSHEEI I3.

fluyen/2371s Fran-/Zaleszz' 6.

P03 MI KWWL Q ILJ/l UNITED STATES PATENT OFFICE.

FRANK ZALESKI, OF BOSTON, AND AUGUST R. SCHOENKY, O'F SOMERVILLE, MASSA- CHUSETTS, l.ASSIGrNORS TO REECE SHOE VMIACHINERY COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MAINE,

SE'INGr-MACHINEI Specification of Letters Patent. l Patented Dec, 14, 1920 Application filed september 24, 191s. serial No. 255,536.

' of the German Emperor and citizen of the of Middlesex, respectively,

prior patent, and are enhanced in ent improved mechanism.

United States, residing at Boston, of Suffolk, and at Somerville, in the county and State of Massachusetts, have invented4 certain new and useful Improvements in Sewing-Machines, of which the following is a specili-v cation, reference being had therein to the accompanying drawing.

This invention relates to sewing machines and more particularly to a novel machine for stitching Shoe upper to sole lip. This very special class of machine is employed for producing a chain stitch, by the aid of a. hooked,` curved needle, and cooperating movable stitching instruments, namely, thread looper, take-up, and work feed device,.and usually also, thread hook, channel guide, welt feed device, and'locking means for the latter and for the yielding' work support. Such machines are usually designed to serve for either of two purposes, firstly, to stitch the upper and a strip of welt to the projecting `lip of the insole of a welt shoe, or, secondly, to stitch the reversed upper to the upstanding'lip of the sole -of a turn shoe; whence this class of machine .1s generally 'known as a welt aand turn stitching machine.`

The particular embodiment of the present invention herein illustrated is in part like that illustrated in our Letters Patent No. 1,288,366, patented December 17, 1918, and to that extent is a continuation thereof, but

vis also an improvement upon said prior patent. Asi such improvement, the general object of the present invention 1s to afford a machine of the special class referred to,

which is yet more simple than that shown inA said prior patent, possesses fewer moving Aparts and is therefore lighter in weight and cheaper in first cost, while at the same time quieter and smoother in operation and correspondingly capable of relatively greater' speed and output. Such objects are generallyexplained and largely attained-in said the prescounty Another object is the improvement in the stopping and restarting of a vmachine of the class referred to, suchy as will substantiallylthe needle engaged in the work, and will permit subsequently and facilitate the usual and necessary reversal .to retract the needle and free the work for removal ,with the further advantage that the machine so equipped may be repeatedly stopped and restarted during the stitching of a single shoe without the action of reversal until the desired eX- traction` of the work upon the completion of the seam. Other and more particular objects and advantages of the present improvement will be explained in the hereinafter following description or will be apparent to those skilled in the'art.v

To the attainment of such objects and ad- Y vantages 'the present`invention consists in .the novel machine, mechanisms, combinations, arrangements, devices and other features'herein described or illustrated.

The preferred principle of the present machine, like that in said prior patent, is the operation of stitching instruments with harmonic movements, namely, through `an actuatin mechanism which derives its actuation from a main operating shaft which is a crank shaft, having a small number of number for the varied actuation of so many instruments. In said prior patent iscon'- tained a diagram indicating the harmonic nature of the motions of the several stitch,-

ing instruments which are smooth and free from abrupt action or jar, but as the corre-` controlling pedals, etc. v

Fig. 2 is a ri-ght eleva-tion on a larger scale thanvFig. 1, and lomitting therear portions of the mechanism.

Fig. 3 is a frontelevationof the machine showing the mechanisms includedin Figs; l and 2, and the bearing standard and Wheel at the left, with the shaft, however, broken awa-y between thefstandard and wheel, andI the stopping mechanism omitted, it being shown in Fig. 4. l

Fig. l is a front elevation of the parts at the left end of theshaft, including the stopping mechanism between the bearing standard and wheel; while Figs. and 6 are right elevations of ythe guard disk and the nonrotating clutch member, shown in Fig. 4..

Fig. 7 is a detail left elevation showing so much of the mechanism as takes part in the actuation of the needle C; and Fig. 8 is a plan view thereof.

Fig. 9 is a` detail left elevation showing so much of the mechanism as takes part in the actuation of the take-up F; and Fig. 10 is a lan view thereof.

ig. 11 'is a detail left elevation showing so much of the mechanism as takes part in the actuation of the thread looper D; and Fi 12 is a plan View thereof.

Fig. 13 is a detail left elevation showing so much of the mechanism as takes part in the actuation of the thread hook E; and Fig. 14.1 is a plan view thereof.

Fig. 15 isa detail left elevation showing'. so much of the mechanism as takes part in the reciprocation of the work feed device G toward and from the work; and Fig. 16is' av plan View thereof.

Fig. 17 is a detail left elevation showing so much of the mechanism as takes part in the longitudinal or feeding motion of the work feed device G and channel guide B; and Fig. 18 is a plan view thereof.

Fig. 19 is a detail left elevation showing so much of the mechanism as takes part-in the reciprocation of the channel guide B toward and from the work; and Fig. 2O is a plan view thereof.

Fig. 21 is a detail left elevation showing so much of the mechanism as takes part in the actuation of the welt feed device 'Hg and Fig. 22 is a plan View thereof.

Fig. 23 is a detail left elevation showing so much of the mechanism as takes part in the actuation of the locking dogs A" and H for the work support and welt feed device; and Fig'. 24 is a plan view thereof; and Fig. 25 isa broken-away partial plan of parts thereof.

Fig. 26 shows a simplified substitute welt feed device actuating mechanism in left elevation. p

For convenience the active instruments -which perform operations upon or coperate with the work (shoe), and thread T, are designated by a system of reference letters, while the general machine parts and mechanical connections for,r causing thestitching instruments to perform their respective .functions at the proper time in the'cycle of operations will be designated by -numerals. Various well-known or ordinary featuresor details that will be well understood by those skilled in the art are omitted from the drawings hereof, or are shown in the drawings but omitted from the description, because unnecessary to an understanding of the novel features of the present inil', see Figs-23f25, is utilized for this purpose, coperating with atoothed rack a4 on 'the Work support shank.v As will be explained, the welt guide and feed member H'is similarly'locked `forward, and the two instruments A and H when so locked' co` operateefl'ectively to oppose the force of the feed point G as the latter is moved into engagement lwith the work. They are 'shortly unlocked so as to take readjusted positions, which is necessary as the work progresses, to avoid impedlng the-work.

A work guide B, having a shank b, is so positioned above thework that the extremity of the guide enters the channel which has been previously formed around the outer margin of the shoe sole, thus giving additional guidance to the shoe and insuring the proper positioning of the stitches. It will be understood that the channel of the sole forms a lip, and that this lip is turned .outward by the channel guide B, and thereupon stitched to the shoe upper, and also to the welt in the welt system, thereby connecting the sole, upper and welt. rEhe channel guide is required to undergo slight movements during every cycle of operations. As'seen in Figs. 19 and 20, its shank E svingsy with a hub 7) having an arm t2 through which it is actuated.

An oscillating curved needle C has a harb ist or hook at its forward end, and is carried upon a needle block c in a general forward and rearward direction, the needle in its ad vancing stroke penetrating first the welt,

l'then the upper, and' then the insole, and rewill be properly placed upon the hook 'of the needle on each forward stroke ofthe latter. The looper preferably is oscillated for this purpose to the extent lof. about one and one-eighth revolutions in alternate directions through `a bevel gear d at its upper end, engaged by a similar bevel gear d on a short gear shaft d2, carrying also a pinion cl3, actuated in one direction-and then the other by a rack to be later described; see Figs. ll and 12. A metal box d4 incloses the looper, and is steam-heated, as are several other parts of the machine, to keep the mech anism warm and waxed thread pliable.

Coperating with the looper in placing the thread on the needle hook' is a member E, termed the thread hook. This hasan oscillatory movement, being adjustably secured by a set screw e2 in the right-hand end of a short rock shaft e, from which also rigidly projectsan arm e', actuated as will be later described. See Figs. 13 and 14.

Coperating with the needle, looper and thread ho k is a take-up F, located at the forward eiid of its carrying arm or shank f, mounted on a rock shaft f', which has a rearwardly extending arm f2 for actuation in a manner to be described. See Figs. 9 and l0. Associated with the take-up is a resilient or auxiliary take-up device F', see Figs. 2 and ,l0. This is a passive instrument comprising -an arm oscillating under spring tension between lower and. upper stops f3 and f4, and assisting the take-up F in governing the thread T. The upper stop f4 is made slightly resilient to yield enough to prevent thread breakage, by being pivoted at f5, and is held strained away` from the outstanding portion 51i at the right side lof wall 5l by a. bar spring member f, rigid with stop f4 and put under strain by the/adjustable screw f7. The spring f8 pulls the arm F downward toward stop f3, which, however, it rarely contacts save when stitching is not proceeding. A toothed wheel ,fg loose on the same axle f -as the take-up F and auxiliary take-up F .receives one end of spring f8, the other end being secured to arm F. The purpose of the wheel fg is to adjust the tension of the spring, and for this purpose its teeth are engaged by a threaded.

rod f1, having an accessible head fn, which `canbe turned to tighten or loosen the spring.

vis a forward arm Thread guides T and T are adjustably mounted between the wax pot and take-up, and between the take-up and looper, respectively.

A work feeding device or feed point G, formed with an upwardly extending shank or carrying arm g, is located to engage with the li of the shoe sole. See Figs. l5 and 16, referably the channel 'guide B, already mentioned, is recessed, and the feed point G is arranged to pass through such recess in engaging the work. The feed point ,shank g has its hub loosely rotatable on the slide rod or axle 101. Loose also on the axle g rigidly connected to g, and having a rearward extension g2 by which the feed oint is reciprocated, as will be described. esides its reciprocating movement to and from the work for engaging and disengaging the work, the feed point has also feeding and return movements longitudi- ,nally of the work, along the axis o r rod or forwardly be.

axle 101, for feeding the work tween stitches.

In addition to the above parts A to Gr is shown a member H, which perfo-rms the services both of a welt guide and a welt feeder when welt shoes are stitched, it being carried on a slidingshank t, and having a movement during each cycle for feeding the strip of leather or welt to the stitching point in harmony with the advance of the shoe. A spring L presses the welt feed device forward, and a locking dog H acting on rack h4 locks it there at certain times. See Figs. 2l to 23.

The diagram in Fig l of said prior patent in general represents the nature of the movements of the stitching instruments. The movements of all the instruments, including the needle, the take-up, the looper and others which would be capable of vibratory or noisy action are herein smooth, quiet and noiseless, because harmonic; and there is no such jerk or thrust to the motions as is involved in cam operated connections, the motion of each of these instruments being, on the contrary, analogous to that of a steam engine cr'osshead, which undergoes changes of speed and direction with a harmonic motion and without the suggestion of shock or noise. They are practically wearless, thus avoiding the added vibration due to worn parts.

Comprised in the head 50 of the machine` at the top of a suitable column, are two Stationary walls 51 at the left and52 at the right, and spaced apart so as to'accommodate mechanism between them as well as beyond each of them. The main shaft 53 of the machine extends transversely within the wall 51. ln the present embodiment, all of the operations of the various stitching instruments to be described are effected from this main shaft 53. The shaft is shown provided at its extreme left end with a wheel 55 serving both for engagement by a driving belt and as a hand wheel for reversing or otherwise manipulating the, shaft by hand.

The customary mode of stopping a Welt and turn stitcher has long been to 'place the hand upon the wheel 55, bringing the shaft to rest and taking care that the forward rotation continues until the end of. a stitch cycle, and then reversing somewhat to retract the needle from the Work; but it is highly advantageous to provide astopping means which will take the operators attention largely from this function and facili-y tate his observation and manipulation of the shoe being stitched. The conditions are lpeculiar in this type of machine, and herein is shownV a stop motion for this 'special apparatus, 'the principles of which are embodied inl the structure illustrated in Figs. l to 6. The principle of the operation is to frictionally and promptly stop the forward rota-l l tion of the shaft at the proper point in the stitch cycle by a mechanism which is put into action by the operator, e. g., by letting up a pedal, but automatically timed as to the point of stoppage, and the arrangement being of a character tol permit'the operator after stoppage to reverse the shaft for the purposes stated.l

The shaft 53 is shown as extended considerably to the left beyond the bearing 54., with the wheel 55 at its extremity. instead of running the belt'iipon the pulley a belt pulley 20 is provided, this running loosely on the shaft and having a 4conical clutch recess at 2l in its right face. Keyed upon the shaft 53 to the right of the belt pulleyis a double-acting shifting clutch member 22 having a left cone 23 adapted to frictionally engage in the recess 21 mentioned, and a right cone 24 adapted to engage in a corre-y sponding recess25 in a non-rotating clutch or brake member 26 surrounding the shaft and connected to the bearing standard 54. ln order to shift the clutch member 22 to right or left, it is provided with alperiplieral groove 2? engaged by the opposite pins 28 of a 'fork-ed clutch lever 29, 'which is pivoted at 30 to a fixed bracket 3l. `The shift lever 29 has an extension 32 pulled rightward by a spring so as to normally engage the clutch member 22 with the non-rotating complementary clutch member or brake 26, thus holding the main shaft at rest. I

For shifting the clutch to cause the shaft to be driven, the lever 29 is provided with a rightward extension 84 connected by a link 35 withn reversing lever 36 centrally pivoted and having a pedal rod 37 extending to a leemte pedal near the floor; so that when the pedal is depressed the clutch lever 29 and shifting clutch member 22 are thrown to the left causing the cone 23 to engage the recess 2l of the belt pulley 20, and thus bringing about full speed drive. When the pedal is released, the spring 33 comes into action to force the clutch member 22 to the right, and its engagement /with the brake member 26 will bring the shaft quickly to rest. There is but slight rotary momentum in the present machine owing to the absence of cams or other heavy rotary parts, and the shaft can be brought to rest by the application of lin the work, because otherwise the final stitch will not have been completed. In order to secure this resultther'e is provided a guard which prevents the application of the stopping friction, that is, keeps the co-acting members 24 and 26 apart, until a predetermined extent, c. g., a quarter rotation before the desirediinal stopping point. This guard consists of a disk 38 pinned; to the shaft so as torotate with it and having a groove at 39 cooperating with a guard pin 40 shown as mounted to slide to right and left in the bearing standard 54;. The guard pin 40 is connected by a link 41 with the clutch lever 29 so that the latter cannot move rightward until the guard disk 38 allows the pin l0 to move to the right. At about a quarter rotation before the final stopping point, the pin' 40, pulled to the ri ht by the spring 33, is able to drop into te groove 39 of the disk 38. Fig. 5 shows this position in dot-- vted lines. The nature of the stopping friction and the strength of the spring 33 arel such that the shaft 53 will come to a stop within about a quarter rotation so that the pin and groove would finally stand about as indicated in full lines in Fig. '5. A. slight variation one Way or the other would not be of consequence. ln case the friction is insufficient, the groove 39 may be enlarged at its extremity and provided with a spring buffer device 42.

ln this class of machine it is further de sirable to be able to readily back up the shaft to the extent of about a quarter revolution for the purpose of retracting the needle lfrom the work so that the work can readily be .removed from the machine. has been the time worn practice to bring vthe shaft to rest at the end of a stitch cycle 1 ple, convenient and efficient mea-ns for permitting and bringing about this end. This is accomplished herein specifically by adapting the non-rotating clutch or friction member 26 to a slight rotatability, namely, a quarter revolution or thereabout, depending on the extent of reverse movement needed to bring the empty needle back out of the work. To permit this limited movement the friction brake member 26 is shown as loosely surrounding the shaft 53 but limited in its movement by a fixed pin 43 secured in the bearing standard 54 and projecting leftward intQ a quadrantal groove or recess 44 in the member 26, as shown in the right-hand view, Fig. 6. A coil spring 45 tends to rotate the member 26 forwardly so as to hold it normally against the stop pin 43, as shown in Fig. 6. `Forwardly is usually in the direction of the larger arrows on member 26 in F igs. 4 and 6. This spring 45 has its end- 46 projecting into the bea-ring standard 54 and its other end 4T into the brake member 26, permits the shaft 54 after its stoppage at the end of a stitch cycle to bereversely rotated, in the direction of the short arrows, and to the extent of the groove 44, that is, about a quadrant, despite the frictional grip of the member 26 on the clutch member. and

shaft. Moreover, the length of the slot 44 gives the operator the proper indication as to yhow far to reverse. The engagement of the guard pin and disk 40 and 38 is of no hindrance, for the quadrantal slot 39 permits the disk and shaft to be reversed from the full to the dotted position of Fig. 5.

The operator performs this reversing operation by the hand 'wheel 55, turning it toward him until one of the pins`40 or 43 is struck. The needle is nowvretracted and the work may be extracted, and new work inserted. The spring 45 may be made insufficiently strong to advance the entire machine so that the operator is not compelled to hold his hand upon the retracted wheel 55 when extracting a shoe. F or restarting, the depression of the pedal rod 37 throws the clutch member 22 across to the constantly rotating belt pulley and withdraws the guard pin 46 from its disk, and the machine promptly assumes full speed, while the spring 45 immediately brings the friction member 26 back to the normal position shown in Fig. 6.

Another advantage of the stop motion described `is that in certain classes of work, for example in making the sharp turns at the toe of a pointed shoe, it may be desirable to proceed by making one or two stitches at a time so that the operator may more deliberately swing the shoe around to accord with the progress of the stitching. By the described mechanism he may depress and immediately release the pedal, which action will start up the machine and cause its prompt strmpage, after a singie stitch it desired, and always at a point with the needle This arrangementv lin the order mentioned.

Astopping as described leaves the needle in the work, with the stitch completed, the startingor restarting causes the stitching to proceed, the final reversal retracts the needle and frees the work, and the mechanism for actuating the needle and other stitching in-` struments is such as to avoid substantial weightv or momentum, rendering the quick frictional stoppage practicable. Ve come now` to the operating shaft and stitching connections.

' The main shaft 53 is a crank shaft having a plurality of cranks or pins which actuate several crank rods or pitinen. The first o1' left-hand crank 56 is located between the bearing standard 54 and the frame wall 51, while the second or right-hand crank 57 is inside or between the two frame walls 5l and 52. The two cranks have a different timing, the inside crank being between 45 vand. 90, preferably about 60O in advance of the outside crank. The inside crank is elongated and accommodates a plurality vof pitmen, three being shown, which extend in different directions, so that they have different timing, and so that the single crank 5Z'has the effect of three cranks.

Engaging'the irstor outside crank 56 is the 'pitman 61, and engaging the inside crank 57 are the pitmen 62., 63, 64, the four pitmen being arranged from left to right The coperative actuation of all of the stitching instruments A to H is effected by these tour pitmen through the intermediate mechanismto be described. v

The mechanism may best be described by considering in turn each of the instruments A to H and tracing out from the general figures and the detached views the actuating connections to it from the cranks and pitmen already described.

Vile would firstlmention that there are several important rocking members or rockers, each comprising one or more arms, which are continuously oscillated to and fro by the pitmen, and each of which in turn trans- Vmits the motion to one or more, in some occupied at the end of a stitch cycle, that is, when the ylast formed stitch has been properly taken up and set. In this condition 4the needle stands in the work or for- Ward, as indicated in Figs. 1, 2 and 7. xln addition to the showing of the parts in such position, most of the elevational views show also, in dotted lines, the opposite positions or limits of motion of the several instruments. lin the elevational view the fulcra, axles or shafts which are stationary in position are distinguished by being cross-sectioned to differentiate them from mere connecting or floating pivots.

The work Support A. is not movable except as it 'yields to the pressure of the work and is returned forwardly by the spring a3; but', as explained, the work support is required to be held rigidly forward at certain periods, and for this 4purpose the locking device or dog A' is provided. See Figs. 23-25. This dog is controlled 'through its shank, which has a slanted or cam-like extremity a2, as indicated in Fig. 25, coperating' with the lower end ofthe rock arm 74, part df the rocker 71 before mentioned, so that, when the' rock arm swings forwardly to the dotted line position of Fig.n 23, it throws the cam a2 to the left and removes the dog A from the teeth a4 of the work support. When the reverse movements take place the dog is returned by spring pressure into engagement with the rack so as to lock the work support forwardly, as explained.

lt will be convenient at the Sametime to Idescribe the analogous locking and releasing of the welt feed member H, which herein has aA separate locking dog H', and it will be observed from Fig. 23 that the shank of this dog is cam shaped at h2 and operated `similarly to that of the work support dog, namely, by the swing of the rock arm 74; and the parts are timed so that both instruments A and H are locked forward at the time the work feed device Gmoves rearwardly against the work.

The channel -guide Bis reciprocated to and from the workfA from. the crank 56, which drives the short pitman 61, the free end of which is pivoted to and guided by the arm 67 of the rocking lever'66, the hub 68 of which 'is a sleeve loose on the fulcrum or axle f already mentioned. See Figs. 19 and 20. Link 75n extends from the pivoted junction of 61 and 67 to the forward free end of the rock arm 75 of the rocker 76. This rock arm 75 is mounted on the axle or rock shaft 76a which also carries downwardly extending rock arms 77 and 96, these uni-v tary parts jointly constituting the aforesaid rocker or rocking member 76. The free end of the downward arm 77 of the rocker 76 is connected by a link 78 with a longitudinally sliding member 79 that is connectedby a stud and slot device 79a to the arm b2 'of the channel guide.

-mentioned ee Figs. 15 and 16.

menate The motion of the pitman 61 is thus communicated to the channel guide in the manner indicated in the fuli and dotted lines in Fig. 19. The hub` b of the channel guide shank is shown as a sleeve loose on the axle or rod 101 on which the feed point is sleeved, and the two hubs or sleeves lie between collars 102 on the rod, so that when the latter shifts axially vto opcrate the feed point the channel guide is caused to move along with the shaft and feed point.

` The needle C .carried onr'the oscillating needle block c is operated from the big rock lever 73 through a floating link 80 extending from the end of the lever to the needle block, as shown in Figs. 7 and 8. K v

The thread looper l) is caused to rotate in reverse directions by the elements d, d', (Z2, (Z3, already described. The last mentioned ofthese elements is the pinion d, as shown in Figs. 11 and 12. This is reversely driven by a rack 85 which takes its actuation from the pitman 61, and rocker 66, already mentioned, which latter is provided also with the forwardly extending rock arm 83, connected by a short link 84 with the swinging rack 85 already mentioned. This mechanism is simpler and better than that 'shown in the said prior patent for actuating the looper.

The thread hook E is actuated from the rocker 66, that is, from a short downwardly extending arm 87 formed thereon, through a link 88 extending from said arm to the oscillating shank e of the thread hook. as seen in Figs. 13 and 1&1. This is a simplification and improvement on the prior patent.

rearwardly extending arm f2 from the pitman 64, as follows. The pitman is guided in its movements by a swinging arm 91 loose on the axle or Vshaft 76a of the rocker 76. Extending from the connected extremities of the pitman and arm is a link 92 connected in turn to the arm f2 of the take-up, as shown in Figs. 9 and 10. The oscillatory take-up shaft f also serves as an axle for the rockers 66 and 69. .A

The feed point G has its backward and forward reciprocating movements. for engaging and disengaging the work, effected from the swinging arm or rocker 69 already This member rocks about the axle or shaft f in the forward part of the machine. At an intermediate point the arm 69 has pivoted to it a' short link 93, the free end of which has secured to it a stud 95,'extending leftward and engaging slidingly a circular hole in the arm g2 of the feed point, so that the latter is caused to go through the reciprocating movements indicated by the full and dotted lines in Fig. 15. Near its hub or ful- The take-up F- isI actuated through its Y Crum, the arm `69 is enlarged and slotted at 94 to accommodate the movement ofthe stud 95. l The longitudinal or axial or feed and return movements of the feed point G, and with it the channel guide B, are effected from the outside crank 56 and pitman 61 by the mechanism shown more particularly in Figs. 17 and 18.v As before explained,the pitman throughY a link 7 5a oscillates the rock arm 7 5 of a rocker 76 which includes also a rock shaft 76a and a downward arm 77 taking lpart in the channelguide reciprocation. s seen in Fig. 17, the rocker 76 comprises also another downwardly extending arm 96. This oscillating arm 96 is connected by a link 97 with a sliding bar 98 guided in bearings 98a. The bar slides forwardly and backwardly, and at its forward end is connected by a link 99 with the rightwa-rdly, extending crank lever 100, the forwardly extending arm 100b of which .is pivotally connected to the feed rodor sliding axle 101.' before mentioned. The rod 101 is provided with collars 102 spaced apart and between which are located the hub g of the feed point, and the hub b of the channel guide. Thereby each of the two instruments B and G can be swung about the sliding shaft 101 for engaging and disengaging the work, and can be shifted rightward and leftward with the shaft for feeding purposes. The.longitudi nal feed and return movements of the instruments B and G are permitted by the sliding connections 79a in the channel guide connections and the similar sliding connection of the stud 95 in the feed point connections. The welt member H which both guides -and feeds the welt and is carriedupon the sliding shank L. requires a quick backward -movement and. return at the proper point in the cycle. It may be actuated in differ ent ways. and lfor turn shoes may be omitted. In Figs.21 and 22 it is shown as 'actuated from pitman 63fand rock leverv 73, as follows. Pivoted to lever 73 near its fulicrum is a link 103 connected at its other extremity to the free end of 'the pitman 63. Y

pushes or bunts it backwardly only. For this purpose the arm 108 has an Vupward extension 111 arranged to be struck by a stop 112 on an extension 107a of 107 on each forward swing of the latter. The arm 111 also arm 100a of the bell has 4a spring stop`113 which determines the extent of return or rearward motion of arm 111, that is, the forward position lof the shank L. The stop 113 contacts a resilientl buffer 114 on the frame wall 51, see Fig. 22; l The train of parts -103 to 110, inclusive, and as well the pitman 63, a total of eight movable parts, shown in Figs. 18 and 19 for actuating the welt feed device H, may be` in the cycle and return, and as the parts are light and the motion is short, the described connections are adaptedto perform the operation without causing appreciable noise or shock, while dispensing with seven movable parts." It 'is desirable to have shock absorbing or rubber buffers for both the y rearward and return Vmovements of the shank 11 and for this purpose it is provided at its rear end with a pair of stops 118, 1183, one coperating with a buffer 114b in the frame wall 51, and the other with a similar buffer 114a in a bracket 119 secured to the wall. In dotted lines, Fig. 26, are shown the position of the crank 57 and roller 116 when the former has moved the latter rearward.

W e herein use the word axle as meaning a bar,`shaft, spindle, or the equivalent, which affords a fixed axis or center, and on or with which any of the various members rook,

turn, swing or fulcrum. Ver use the word shaft7 in the narrower sense of an axle which turns or rocksLwith its members. For example', the spindle 76a is an axle or shaft with respect to the arms 75, 7 7 and 96, constituting the rocker76, but is merely an axle with respect to the rocker 71 or the rocker arm 91, which turn loosely on it. Y We have not attempted in the above description of the parts to point out completely the relation between the various pitmen, links, levers, etc., with the, precise location, size, angle and speed of .each part, since that would require great length of description, whereas the disclosure in the drawing speaks for itself, and supports the claims presented( The following considerations, however, deserve specific mention.

The shaft, .looking at the machine from the left, rotates counter-clockwise, and the outside crank 56 is shown as timed 60 behind the inside crank 57. The various pitmen extend in different vdirections from the several cranks, and this arrangement in conjunction with the form, position, size and ar- 

